it's sturdy. the wheels are a great feature. they roll easily, and hold the container up off the floor. the lg container holds about 30+lbs of kibble and the small upper container will hold a 10 lb box of milk bones or a lg amnt of other treats. very convenient to be able to roll it around the kitchen. This is my second unit. the first is a year old and going strong.

I cannot be more pleased with this. My dog kept sneaking where the bag of food was and getting into it. When I got this and put his food and treats in it he sniffed it once and then left it alone. Easy to put wheels on and fits perfectly under the counter and out of the way. Love it.